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Schedule - Annual Total Returns (Vanguard Short-Term Government Bond Index Fund - ETF Shares ETF) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Long-Term Government Bond Index Fund - ETF Shares ETF) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Short-Term Corporate Bond Index Fund - ETF Shares ETF) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Intermediate-Term Corporate Bond Index Fund - ETF Shares ETF) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Long-Term Corporate Bond Index Fund - ETF Shares ETF) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Mortgage-Backed Securities Index Fund - ETF Shares ETF) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Short-Term Government Bond Index Fund - Signal Shares Signal) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Intermediate-Term Government Bond Index Fund - Signal Shares Signal) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Long-Term Government Bond Index Fund - Signal Shares Signal) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Short-Term Corporate Bond Index Fund - Signal Shares Signal) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Intermediate-Term Corporate Bond Index Fund - Signal Shares Signal) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Long-Term Corporate Bond Index Fund - Signal Shares Signal) link:calculationLink link:presentationLink link:definitionLink 2070854 - 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Schedule - Annual Total Returns (Vanguard Long-Term Corporate Bond Index Fund - Signal Shares Participant) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Mortgage-Backed Securities Index Fund - Signal Shares Participant) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Intermediate-Term Government Bond Index Fund - ETF Shares ETF) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Russell 2000 Growth Index Fund - ETF Shares Institutional) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Russell 2000 Value Index Fund - ETF Shares Institutional) link:calculationLink link:presentationLink link:definitionLink 2070854 - Schedule - Annual Total Returns (Vanguard Mortgage-Backed Securities Index Fund - Signal Shares Institutional) link:calculationLink link:presentationLink link:definitionLink 0000000 - Document - Supplement link:definitionLink link:presentationLink link:calculationLink